Name: Baked Ranch Chicken & Cheddar Potato Casserole
Prep time: 20 min
Cook time: 60 min
Total time: 80 min
Ingredients: 4 boneless, skinless chicken breasts; 1 cup ranch dressing; 2 cups shredded cheddar cheese; 4 medium potatoes (peeled and diced); 0.5 cup milk; 0.25 cup olive oil; 1 teaspoon garlic powder; 1 teaspoon onion powder; salt and pepper (to taste); 0.5 cup green onions (chopped)

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If you’re on the hunt for a comforting, crowd-pleasing dinner that combines creamy, cheesy goodness with tender chicken and hearty potatoes, look no further than this Baked Ranch Chicken & Cheddar Potato Casserole. It’s one of those all-in-one dishes that feels like a warm hug on a plate, perfect for weeknight meals or weekend family gatherings. The ranch dressing infuses every bite with a tangy, herby flavor while the cheddar cheese melts into a luscious, golden crust. Plus, it’s so simple to prepare, requiring just a handful of everyday ingredients that come together beautifully in the oven. Trust me, this casserole will quickly become a favorite go-to recipe in your kitchen!

Why It Works Every Time

This Baked Ranch Chicken & Cheddar Potato Casserole is a winner because it balances flavors and textures perfectly. The ranch dressing adds a creamy, zesty base that keeps the chicken moist and flavorful throughout baking. Cheddar cheese provides that irresistible melty, savory element that pulls everything together. Potatoes add substance and soak up the juices, making each bite rich and satisfying. The olive oil and milk help create a smooth, velvety sauce that binds all the ingredients, while the garlic and onion powders round out the savory profile without overpowering the dish. Baked until bubbly and golden, this casserole is effortless but feels indulgent—perfect comfort food made easy.

Ingredient Breakdown

4 boneless, skinless chicken breasts: The lean protein base. Baking them inside the casserole keeps them juicy and tender.
1 cup ranch dressing: Adds tangy creaminess and flavor depth. Use your favorite brand or homemade ranch for extra freshness.
2 cups shredded cheddar cheese: Sharp and melty cheese that creates a luscious topping and cheesy pockets throughout.
4 medium-sized potatoes, peeled and diced: Yukon gold or russet potatoes work well. They absorb flavors and provide hearty texture.
1/2 cup milk: Helps create a smooth sauce and keeps the casserole moist during baking.
1/4 cup olive oil: Adds richness and helps coat the potatoes for even cooking and flavor.
1 teaspoon garlic powder: Infuses subtle savory notes.
1 teaspoon onion powder: Enhances the overall flavor profile without overpowering.
Salt and pepper to taste: Essential seasonings to bring all the flavors together.
1/2 cup green onions, chopped: Adds fresh, mild onion flavor and a pop of color when sprinkled on top before serving.

Equipment & Tools

Large mixing bowl: For combining potatoes, seasonings, and dressing effortlessly.
9×13-inch baking dish: Perfect size for layering and baking the casserole evenly.
Sharp knife and cutting board: For dicing potatoes and chopping green onions.
Measuring cups and spoons: To ensure accurate ingredient portions.
Aluminum foil: To cover the casserole during baking, allowing the chicken to cook through without drying out.

Directions: Baked Ranch Chicken & Cheddar Potato Casserole

Step 1: Prep the potatoes

Peel and dice your potatoes into bite-sized cubes. Place them in a large mixing bowl, drizzle with olive oil, and season with garlic powder, onion powder, salt, and pepper. Toss well to coat evenly.

Step 2: Combine with ranch dressing

Add the cup of ranch dressing and half the shredded cheddar cheese to the seasoned potatoes. Mix everything together until the potatoes are thoroughly coated.

Step 3: Assemble the casserole

Lightly grease your 9×13-inch baking dish. Spread the potato mixture evenly across the bottom. Lay the boneless, skinless chicken breasts on top of the potatoes. Pour the ½ cup of milk over the chicken and potatoes to keep everything moist during baking.

Step 4: Add cheese topping

Sprinkle the remaining cheddar cheese generously over the chicken breasts. This will melt into a delicious, golden crust as the casserole bakes.

Step 5: Bake covered

Cover the baking dish tightly with aluminum foil. Bake at 375°F (190°C) for 45 minutes. This allows the chicken to cook through and the potatoes to soften.

Step 6: Uncover and finish baking

Remove the foil and bake for an additional 15-20 minutes until the cheese is bubbly and golden brown and the chicken reaches an internal temperature of 165°F (74°C).

Step 7: Garnish and serve

Once out of the oven, sprinkle the chopped green onions over the casserole for a fresh, vibrant finish. Let it rest for 5 minutes before serving.

If you love cheesy chicken casseroles, you might want to try the Baked Three Cheese Chicken Penne — another comforting baked dish that’s a guaranteed hit.

Ingredient Swaps & Substitutions

Chicken: Substitute with turkey breasts or boneless thighs if you prefer slightly richer meat.
Cheddar cheese: Swap for mozzarella, Monterey Jack, or a cheese blend for a milder or creamier texture.
Ranch dressing: Use a Greek yogurt-based ranch for a tangier, lighter alternative.
Potatoes: Sweet potatoes or baby red potatoes can be used for a different flavor profile and texture.
Milk: Use almond milk or oat milk if you want a dairy-free option, but keep in mind the flavor will be slightly different.

Author’s Commentary

This Baked Ranch Chicken & Cheddar Potato Casserole is one of those recipes I keep coming back to because of its simplicity and reliability. It takes minimal effort but delivers maximum comfort — perfect for busy weeknights or casual weekend dinners. The ranch dressing is a game-changer here, adding a depth of flavor that elevates the whole dish without extra seasoning fuss.

I also love how versatile it is. You can easily switch up the cheeses or add some cooked veggies like broccoli or mushrooms to make it a complete meal in one dish. It pairs beautifully with a crisp side salad or some steamed green beans for a balanced dinner.

If you’re a fan of layered, cheesy baked dishes, you should also check out the Baked Four Cheese Lasagna Roll Ups — equally comforting and indulgent for those cozy nights in.

Storing, Freezing & Reheating

To store leftovers, let the casserole cool completely, then transfer to an airtight container and refrigerate. It will keep well for up to 3 days.

If you want to freeze, portion the casserole into freezer-safe containers before baking or after baking and cooling. Freeze for up to 2 months. To reheat, thaw overnight in the fridge and warm in the oven at 350°F (175°C) until heated through, about 20-25 minutes.

For quick reheating, microwave individual portions on medium power, stirring or rotating halfway through to ensure even heating.

Ask the Chef

Can I use frozen chicken breasts for this casserole?

Yes, but make sure to thaw the chicken completely before assembling the casserole. This ensures even cooking and prevents the casserole from becoming watery.

Is it okay to use instant mashed potatoes instead of fresh potatoes?

While you can, fresh diced potatoes give the best texture and flavor in this casserole. Instant mashed potatoes won’t hold up well to baking and will change the dish’s consistency.

Can I make this casserole ahead of time?

Absolutely! You can assemble the casserole a few hours or even the night before, cover it tightly, and refrigerate. Just add a few extra minutes to the baking time if it’s cold from the fridge.

What can I serve with this casserole?

A simple green salad, steamed vegetables, or roasted Brussels sprouts pair well. The casserole itself is hearty, so lighter, fresh sides complement it nicely.

Baked Three Cheese Chicken Penne – A creamy pasta bake with layers of cheesy chicken goodness.
Baked Four Cheese Lasagna Roll Ups – Roll-ups stuffed with a rich blend of four cheeses, perfect for a cheesy dinner night.

Bring It Home

This Baked Ranch Chicken & Cheddar Potato Casserole brings together the best of comfort food flavors in one easy dish that’s perfect for any night of the week. With tender chicken, creamy ranch-infused potatoes, and melty cheddar cheese, it’s a recipe that satisfies cravings without fuss. The recipe’s flexibility allows you to tailor it to your family’s tastes, making it a staple you’ll return to again and again. Whether you’re feeding a hungry crowd or just want a wholesome, cozy meal, this casserole is sure to hit the spot.

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